11220627545 has 4 divisors (see below), whose sum is σ = 13464753060. Its totient is φ = 8976502032.

The previous prime is 11220627527. The next prime is 11220627547. The reversal of 11220627545 is 54572602211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54572602211 = 139 ⋅392608649.

It can be written as a sum of positive squares in 2 ways, for example, as 4528078681 + 6692548864 = 67291^2 + 81808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11220627545 is a prime.

It is a super-2 number, since 2×11220627545² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11220627547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122062750 + ... + 1122062759.

It is an arithmetic number, because the mean of its divisors is an integer number (3366188265).

Almost surely, 2^11220627545 is an apocalyptic number.

It is an amenable number.

11220627545 is a deficient number, since it is larger than the sum of its proper divisors (2244125515).

11220627545 is an equidigital number, since it uses as much as digits as its factorization.

11220627545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244125514.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 11220627545 in words is "eleven billion, two hundred twenty million, six hundred twenty-seven thousand, five hundred forty-five".